Overload switch



FIG. 1 is a front and upper left perspective view of an overload switch showing my new design;

FIG. 2 is a front and lower left perspective view thereof;

FIG. 3 is a right end elevational view of an overload switch showing my new design on a reduced scale;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a right end elevational view thereof;

FIG. 6 is a front elevational view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a top plan view thereof. 

The ornamental design for an overload switch, as shown. 